-80.74% is the change from 405 to 78
Calculation steps:
[( 78 - 405 ) ÷ 405] x 100 = -80.74%
Formula
Percentage change = [(78 - 405) / 405] x 100
Subtract the new number by the original number
78 - 405 = -327
-327 ÷ 405 = -0.8074074074074075
-0.8074074074074075 x 100 = -80.74%